<?php
  include("top_links.inc");
  echo "<div style=\"position:relative; height: 450px;\">";
  if (isset($_SESSION['valid_login'])) {
    //include("tree.inc");
    include("page.inc");
  }
  else {
    echo "Plesae <a href=\"frontpage.php\">log in</a>!";
  }
  echo "</div>";
?>
